Gas-burner.



H. E. SHAFFER.

Patented July 31', I900;

GAS BURNER.

(Application filed. Apr. 26, 1900.) (No Model.)

' carbons-such, for instance, as acetylene charge-passage 2 and discharging axially into clear, and exact description of the same, reflar parts.

NITED STATES.

PATENT FFIQE.

HENRY E. SHAFFER, OFROOHESTER, NEW YORK.'

GAS-BURNER.

SPECIFICATION forming'part of Letters Patent No. 654,682, dated July 31,1900. Application filed April 26, 1900.- $erial No. 14,488. (No model.)

To all whom it may concern:

Be it known that I, HENRY E. SHAFFER, of Rochester, in the county of Monroe and State of New York, have invented certain new and useful Improvements in Gas-l3urners; and I do hereby declare the following to be a full,

erence being had to the accompanying drawings, forming a part of this specification, and to the reference-numerals marked thereon.

My present invention relates to certain improvements in burners for gas rich in hydrogas-in which the air is mixed with the pure gas before being burned and in which air is directed in separate streams upon the minute orifice, where the pure gas first issues, in such manner as to keep this orifice clear and prevent the deposit of carbon thereon. To these and other ends it consists in providing the tip with air-inlet apertures arranged at an angle tothe gas and air discharge passage of the burner less than a right angle and discharging below their inlet ends and directly upon the column of gas where it first issues into the disch arge-passage, as will be hereinafterfully described. i

In the drawings, Figure 1 is a sectional View of a burner tip constructed in accordance with my invention; Fig. 2, a sectional view of another form of tip adapted particularly to be used after the manner described in my prior patent, No. 617,942, dated January 17, 1899.

Similar reference-numerals indicate simi- The tips for burners shown in the accompanying drawings are adapted to bemade from a single piece of refractory material, such as staetite, both forms being provided with a gas-passage 1, a discharge-passage 2, and extending between these a minute gasaperture 3, arranged at the bottom of the disthe same.

4 indicates air-passages, two or more of which are preferably employed, formed in the walls of the'tip at the sides of the dischargepassage 2 and extending at an'angle less than a right angle relative to the axis of the same, having theirinlet orouter ends above the level of the minute gas-aperture 3 and arranged to discharge the air descending or passing in directly upon the column of gas as it first issues from the aperture 3. This arrangement causes separate columns of air to strike the gas at the proper point to cause it to thoroughly mix with the gas promoting the combustion thereof and also causes such fresh air by the direct impingement at this point to keep the minute aperture clean and prevent the deposit of carbon, &c., which otherwise would clog said aperture and prevent the proper operation of the burner. The air is drawn into the air-channels by the gas under high pressure passing through the dis charge-passage, and by the angular arrangement of these channels the air is directed downward directly upon the top or exit of the small gas-aperture, thereby preventing the more or less pure gasthat is, gas With out having air mixed with itfrom spreading at the sides of said aperture and remaining in contact with the heated burner, causing a deposit, as is the case when the air-channels enter the discharge-passage above the small gas-exit, forming a dead-gas pocket therein. When the air-channels enter the dischargepassage at right angles and in the plane of the gas-aperture, as in my prior patent referred to, this dead-gas space is materially reduced and the clogging of the burner is in a larger degree prevented. By the angular arrangement of the channels shown herein the entering air is caused to impinge more directly upon the gas-aperture to break up the column of gas, mix with it, and prevent the gas from coming in contact with the heated surface of the burner and at the same time affords a longer passage through the tip for cool air, which reduces the temperature of the tip. The air-passages a are preferably formed by passing a drill downwardly at an angle through the side walls of the tip, so that its center will coincide with the center of the minute gas-aperture, and, as stated, several passages could be employed, if desired. 1n the tip shown in Fig. 2 the same air and gas passages are shown; but the gaspassage in the body of the tip is arranged at an angle to the discharge passage and is therefore capable of use in a burner having diverging arms into which the tips are placed, with the dischargepassages so arranged that the streams of gas and. air will converge to form a fiat flame, as in my prior patent, No.:

617,942, dated January 17, 1899.

I claim as my invention 1. An acetylene-gas burner provided with a discharge-passage, a small gas-aperture leading axially therein, and an air-passage" leading into the discharge-passage having its outer end higher relative to the gas-aperture than its inner end, and discharging a stream of airupon the gas as it first issues into the discharge-passage.

2.- An acetylene'gasburner provided with a discharge-passage, a small gas -.aperture leading axially therein, and air-passages in l the walls around the discharge-passage having their outer ends higherrelative to the gas-aperture than the inner ends and discharging streams of air upon the gas as it first issues into the discharge-passage.

i HENRY E. SHAFFER. Witnesses:

J. F. CHURCH, G. A. RODA. 

